Articles tagged with Coral Reefs
A study by Kris Karnauskas found that a marine heatwave followed by a terrestrial one, exacerbated by global warming, led to the massive coral bleaching event. The warm water persisted for months, causing extensive damage to the ecosystem and drastically changing species composition.
The University of Guam has secured a five-year, $20 million grant from the National Science Foundation's EPSCoR program to enhance its research capabilities on coral reef survival. The project aims to understand the evolutionary and ecological processes that drive resilience in coral reefs under climate change stress.
Research on the Great Barrier Reef found severe coral loss is associated with increased biomass and productivity of large, long-living herbivorous fish. However, decreased recycling of this biomass could leave the ecosystem vulnerable to crashing.
Researchers found that coral reefs in Panama's Caribbean coast suffered significant declines in species diversity and abundance after a 1986 refinery accident. Thirty years later, the impacts of coastal development and human-related stressors on reefs were comparable to those of oil spills.
A new study finds that climate-driven transformations render marine reserves ineffective in protecting biodiversity and fish biomass. Marine reserves still protect some species, but conservation efforts require re-evaluation. Urgent action is needed to reduce greenhouse gas emissions and mitigate other pressures.
The Caribbean coral reef decline began in the 1950s and 1960s due to local human activities such as fishing and land-clearing. Researchers used fossil data, historical records, and underwater survey data to reconstruct the abundance of staghorn and elkhorn corals over the past 125,000 years.
A new study analyzed 1,800 tropical reef sites worldwide to understand conditions for maximizing reef health and biodiversity. The findings suggest that high conservation levels can support all three key ecological metrics when human use is low, but become increasingly challenging with increased pressure.
A recent study found that only five percent of tropical reefs globally can meet multiple goals, including providing enough fishing stocks and maintaining biodiversity. Marine reserves placed in areas with low human pressures had the best results for helping reefs get on the 'A-list', meeting all goals simultaneously.
Researchers have developed 3D-printed coral-inspired structures that can grow dense populations of microscopic algae, opening up new applications for coral conservation and bioenergy. The innovative technology mimics the symbiotic relationship between corals and algae, with microalgae producing sugars to the coral through photosynthesis.
The Great Barrier Reef has suffered its third coral bleaching event in just five years, with the most recent event being the worst. Severe bleaching has struck all three regions of the reef, causing widespread damage to coral habitats.
A new study found that human-induced environmental stressors reduce coral reef populations' genetic diversity, compromising reef resilience. The research identified an adaptive response by corals to watershed discharges containing sediment and pollutants, leading to closer genetic relationships between nearshore corals.
New study reveals ocean deoxygenation as a critical factor in coral reef degradation, highlighting the need for improved data collection and management practices. Researchers warn that reduced oxygen availability exacerbates the impact of climate change and pollution on reefs.
A new framework will help marine scientists design more accurate experiments to understand the impact of global warming on marine life. The framework provides a simple way to select future CO2 levels and temperature for experiments, taking into account regional variability and local conditions.
A study led by HKU marine biologist Dr Celia Schunter reveals that reef fishes are directly affected by heatwaves, but their responses vary greatly among species. The research tracked the molecular response of five species to the 2016 heatwave conditions on the Great Barrier Reef.
A recent study found that heatwaves have varying effects on different fish species, with some struggling more than others. The research tracked changes in gene expression in five coral reef fishes before, during, and after a severe marine heatwave, revealing species-specific responses to the heightened temperatures.
Researchers studying coral reef fish found species-specific physiological responses to warming temperatures, influenced by heatwave intensity and duration. The study's results signal potential long-term consequences for fish fitness and ecosystem health.
A new study finds that soft corals in the US Virgin Islands have recovered from Category 5 storms, but stony coral populations are declining dramatically. The resilience of soft corals is an important development, but they cannot replace the hard physical structure of reefs.
Research links ENSO climate pattern to detrimental impacts on Southeast Asian coral reefs, revealing long-term environmental changes. Coral cores provide a critical record of local changes in river runoff and rainfall, highlighting the need for resilience to future environmental changes.
Research reveals large ecosystems like Amazon forests can collapse in 49 years and Caribbean coral reefs in just 15 years. This accelerated rate of transformation is attributed to the modular structure of larger ecosystems, which initially provides resilience but ultimately accelerates unraveling when a threshold is passed.
The Red Sea's coral reef, critical to the region's ecosystem, is resilient but vulnerable to climate change. The researchers call for UNESCO recognition and coordinated conservation efforts to protect the reef.
Scientists from the Global Reef Expedition found that many coral reefs in the Cook Islands were in good shape, with high coral cover and diverse fish communities. However, Aitutaki's corals were being ravaged by a crown-of-thorns starfish outbreak, causing significant damage to the reef ecosystem.
Researchers discovered a 7,000-year-old fossilized coral reef that predates human settlement and closely resembles its pre-human state. The team found the reef to be resilient, with minimal changes over centuries, despite current environmental degradation.
New research suggests that rising sea surface temperatures and acidic waters could eliminate nearly all existing coral reef habitats by 2100. The study found that few to zero suitable coral habitats will remain by 2100, with only small portions of Baja California and the Red Sea being viable locations for coral reefs.
Long-standing human stressors like agricultural run-off and overfishing have contributed to coral reef die-offs. Coral communities were being transformed by human activities much earlier than previously thought, according to recent studies.
A new study reveals that rapid urbanization and poor waste management are the primary causes of coral reef loss in the South China Sea. The research, led by HKU marine ecologists, used geochemical techniques to analyze coral skeletons and found a significant increase in nitrogen pollution coinciding with Hong Kong's rapid development.
The Global Reef Expedition found that coral reefs in Tonga were moderately healthy, but fish communities needed attention. The report highlights the importance of marine conservation and recommends expanding management efforts to protect fish resources.
A new study reveals that tropical forests and coral reefs are being threatened by a combination of ongoing climate changes, increasingly extreme weather, and damaging local human activities. The research highlights the urgent need for international action to decrease CO2 emissions and reverse this trend.
Researchers found that existing marine reserves need to be much larger to conserve shark populations, with reserves extending between 10-50km required for significant improvements. This study provides options for managers to address declines in shark populations and ensure healthy oceans.
Scientists discovered dozens of new coral species during a recent expedition along the Great Barrier Reef, revealing that much of existing classification is deeply flawed. The team's findings suggest that biodiversity may be up to three times higher than previously thought.
Research suggests that maintaining a healthy size distribution of parrotfish in sea floor ecosystems is crucial for coral reef health. Experiments show that large parrotfish play a key role in controlling algae growth, and selective fishing practices could lead to an overgrowth of algae if these larger fish are removed.
A new study reveals that ocean acidification has no direct impact on the behavior of coral reef fish, contradicting previous high-profile studies. The exhaustive analysis, led by Université de Montréal researchers, found consistently normal behaviors in fish under predicted end-of-21st-century CO2 levels.
A comprehensive multi-year study challenges previous findings that ocean acidification will negatively impact coral reef fish behavior. The research found that CO2 levels expected by the end of the century have a negligible impact on fish activity levels and ability to avoid predators.
A comprehensive study of French Polynesia's coral reefs has been conducted, revealing the healthiest reefs are found around islands with low elevation. The study also found that cyclones and crown-of-thorns starfish outbreaks have decimated reefs in some areas.
A new study by Simon Fraser University reveals that sea levels in the central Indian Ocean have risen by nearly a meter over the last two centuries. The research provides new insights into historical sea level variability and its impact on coral reefs and islands.
New research reveals that community-led rotational fishing closures can increase fish populations on closed reefs compared to open ones, making them less scared of people and easier to catch.
A study by the Woods Hole Oceanographic Institution compared seawater from protected and impacted reefs in Cuba and Florida Keys, finding that protected reefs have higher microbial diversity and lower nutrient concentrations. This suggests that offshore and highly-protected reefs are healthier than nearshore reefs with less protection ...
A new social-ecological systems monitoring framework has been implemented to uncover drivers of coral reef conservation success, incorporating both social and ecological indicators. The framework, developed from Elinor Ostrom's work, sheds light on local coral reef management contexts, resource use, and stakeholders' perceptions.
A 16-year study in Papua New Guinea found that rotational fisheries closures increased fish biomass and improved catchability. Socially cohesive leadership and high levels of policy compliance were key factors in implementing the system.
A recent volcanic eruption created a new island in the South Pacific, and coral reefs have shown incredible resilience and recovery. The study found that one section of the island supported diverse coral reefs largely unaffected by the eruption, which provided a source of larvae to repopulate reefs around the rest of the island.
A new study by Rice University researchers warns that coral reefs in the Gulf of Mexico are on the brink of collapse due to rising temperatures and ocean acidification. The study found that even reducing greenhouse gas emissions to meet the Paris Agreement's targets may not be enough to preserve the reefs.
Coral reefs in the Gulf of Mexico face extinction due to rising temperatures, acidification, and increased storm intensity. The region's reefs are expected to disappear by the end of this century if no action is taken to mitigate climate change.
The 'blue boat' fleet, consisting of small fishing vessels painted blue, is stripping Pacific coral reefs of seafood, endangering food security for Pacific Island nations. The boats are allegedly operated by Vietnamese fishermen with no contract or insurance, and are traveling thousands of kilometers to fish illegally in Pacific waters.
Researchers found three distinct phases of reef growth since end of Pleistocene era, including periods of slower, deeper growth due to increased sediment and nutrient flux. The study provides a new model of reef growth that suggests the more protected parts of the reef might have been suitable for early coral development.
Researchers found parrotfish populations surge in damaged reefs, consuming microalgae and cyanobacteria that provide food for the fish. This 'feedback loop' helps coral recover as reef health improves, with parrotfish numbers declining once ecosystems stabilize.
Researchers found that playing healthy reef sounds through loudspeakers in dead coral patches doubled fish arrival and increased species diversity by 50%. This 'acoustic enrichment' method could help kick-start natural recovery processes on damaged coral reefs.
A study found that clownfish in Kimbe Bay are unable to adapt genetically to habitat changes and renew their population. The quality of the anemone providing a home to the fish is crucial to its survival, highlighting the urgent need for conservation efforts to protect these marine species.
Researchers found that internal waves can reduce coral bleaching by up to 88% and prevent severe heating events. This natural cooling process may offer hope for coral reefs, but its impact is uncertain due to climate change.
A University of Queensland-led study found that healthy mangroves can support coral reef fisheries by providing alternative nurseries for fish. This allows them to grow larger and head out to the reef as adults, increasing their chances of survival.
Scientists warn of excessive pesticide use in Australian waterways and the Great Barrier Reef, threatening aquatic plants and animals. Pesticide regulation has been deemed ineffective, but local efforts to reduce pollution show promise.
A long-term study found significant declines in live, hard corals on Great Barrier Reef island groups, with temperature stress and wave exposure identified as key drivers. The research highlights the importance of addressing water quality and climate change to prevent ecosystem collapse.
Researchers found that fish can pass on heat-tolerant genes to their children and grandchildren, allowing them to cope with warmer waters. This adaptation could help coral reef fish populations survive projected ocean warming of up to three degrees Celsius.
Researchers at the University of Delaware found that 3D-printed coral models do not harm fish behavior or coral survival. Fish showed no preference between native coral and artificial habitats, making biodegradable materials like cornstarch a promising alternative to plastic.
Biologists have discovered that coral reef fish take advantage of parental care to raise their own young. Genetic tests revealed that many parents were caring for mixed broods of young from different species. The study found evidence of both adoption and brood parasitism, with unrelated young fish benefiting from parental protection.
A new study reveals major changes in Australia's Great Barrier Reef over the past 91 years, with intertidal communities experiencing significant declines in species richness and diversity. The research highlights the importance of long-term monitoring to track changes in community structure and coral abundance.
A recent study on the Great Barrier Reef found that living coral cover can slow future reef dissolution due to ocean acidification. The experiment used a controlled system to simulate high CO2 conditions and showed that living corals were more resilient than dead ones, which would dissolve earlier.
Researchers have sequenced the genomes of corals and their microbial partners, revealing new insights into symbiotic relationships and nutrient sharing. The study aims to aid in the revival of threatened coral reefs by understanding how they interact with their environment.
A 150-million-year-old coral reef snapshot reveals a peak of diversity among marine animals, including fish, crabs, and snails. The study also finds evidence of parasites among these ancient creatures, shedding light on the complex ecosystems of the past.
Researchers suggest a bolder approach to safeguarding coral reefs by focusing on land as well as the ocean. Implementing strategies like renewable energy, aquaculture, and restoring vegetation can reduce global emissions and enhance people's livelihoods. Current approaches to coral reef conservation are failing, and addressing the root...
USC scientists discover coral passes beneficial algae colonies to offspring for survival advantage. The finding suggests corals can adapt to rising ocean temperatures through genetic mechanisms.
Researchers developed predictive tools to estimate sediment and nutrient levels in water. The low-cost sensors will help automate the monitoring process, enabling more frequent predictions of water quality changes.